Knotter for grain-binders



(No Model.)

C. FARNER 8v G. LINDER. KNOTTBR 'EUR GRAIN BINDBRS.

No. 384,245. Patented June 12, 1f s.

3975021 it e5 mbuuwgmphnr. wa-hingam n a nNrren STATES PATENT OrmesoCONRAD FARNR AND GEORGE LINDER, OF MILVAUKEE, VISCONSIN.

KNOTTER FOR GRAINBINDERS.

SPECIFICATION forming part of Letters Patent No. 384,245, dated June 12,1888.

Application tiled March l, 1896. Serial No.193,64li. (No model.)

T0 @ZZ whom t may concern:

Be it known that we, CONRAD FARNER and GEORGE LINDER, of Milwaukee, inthe county of Milwaukee vand State of Wisconsin, have invented new anduseful Improvements in Knotters for GrainBinders; and we do herebydeclare the following to be a full, clear, and eXact description of saidinvention, reference being had to the accompanying drawings, and to theletters or iigures ot' reference marked thereon, which form apart ofthis specification,

Our invention relates to improvements in knotters for grain-binders; andit consists in certain improvements in devices and certain combinationsand arrangement of devices,here inafter set vforth. l

In the drawings, Figure 1 represents a rear view of the device embodyingour invention. Figs. 2, 3, 4, and 5 are details.

Like parts are represented by the same ret'A erence-letters throughoutthe several views.

The device for holding the end ofthe cord, consisting of the disk A andgrooved arm F, the device for carrying the cord around the bundle, thejaws H, for tying the knot, and the device for cutting the cord are allconstructed' in the ordinary manner.

Our improvements relate more especially to the construction andarrangement of the devices for rotating the cord-holding disk or wheelA, consisting of the pawl B, ratchet C, lever D, and verticallymovngslide E, the device for holding and regulating the pressure of thecordholding lever F against the periph ery of the wheel A consisting ofthe spiral spring J and adj usting-screw K, and the device for holdingand regulating the pressure of the lever G against the jaws H.

The slide E is provided with an ellipticallyshaped aperture, L, for thereception of the lug M, which lug projects therein from the face of thecollar N. Each end of the recess L is provided with an angular recess, Oand P, in which the lug M engages as it moves with the shaft R. Thecollar N is secured to the shaft R by a set-screw, S. Thus when the lugM moves above and below the shaft R it moves the slide slowly; but whensaid lug M enters the recess P it carries the slide E up with a quickpositive movement until the lug escapes from said recess above theshaft,

The lug then passes over the shaft communicating but little movement tothe slide until it descends into the recess O, when it carries theslidcdown with a quick movement until it escapes from said recess belowthe. shaft. Thus the required movement is communicated to said slide Eat the prop'er moment for operating the cord-holding disk A, and suchmovement is communicated from said slide to the disk A through the leverD, pawl B, and ratchetwheel C. The lever D is pivoted to the side of theframe T by the shaft d', to which it is secured by the boltu, and to theslide E by pin YV, which pin XV operates in the recess or slot y. Theopposite end of thelever D is pivoted to the pawl B by a pin, A. Thepawl B is retained incontact with the ra-tehet'whcel O by the platespring B', which spring B' is held atits upperend within a recess at a,formed in the lever D, and the llower end of said spring is secured in arecess,

b, formed in the upper end ofthe pawl B, and the tension of said springis such as to throw the lower end of the pawl against said ratchet C.The slide E is provided with a vertical flange, d, which operates in acorresponding groove at e, formed in the face of the shoulder The lowerend of said slide is provided with a slot, g, for the reception of thebolt h, which bolt is affixed to' the stationary frame T. Thus the slideE is retained in place against the end of the frame T and guided in itsvertical movement by the iiange d and bolt lr. The grooved cord-holding`lever F is pivoted atits upper end to the frame T upon the bolt k, andits lower end is retained in contact with and pressed iirmly against thedisk A bythe spiral spring J iand adjusting and retaining screw K. Thescrew K is held in place by the flange C', through which it passes, andin which it is adjusted toward or from said arm F. The inner end of saidadjustingscrew K is provided 4with a recess for holding the end of saidspring J, by which said spring is held in position against said arm. Asimilar screw and tension spring to that last described, indicated by Dand E, are employed to hold and regulate the pressure of the lever Gagainst the knotterjaws H. The screw D is held in place by said flangeO', in which it is adjusted, and one end of said spring E is ICO twofoldfunction ofholding the tensionsprings in place and regulating theirtension, and,ow ing to the limited space they occupy, they areespecially adapted to be used in the combination shown.

The lever D is formed in two separate pieces, a andb, which overlap eachother at the retaining-bolt u. The part a is provided with an elongatedhole or slot, c', through which the retaining-bolt u passes, which slotpermits of said part a' being extended or contracted..

The part b is rigidly attached to the shaft d and turns with it. Thepart a is provided with flanges g g', which overlap the edges of thepart b in such a manner that when the retaining-bolt u is inserted andturned rmly down the two parts of the lever are held rigidly in place.

Ve are aware that similar spiral springs, E and J, have heretofore beenheld in place against a shoulder upon and around the eX- terior surfaceof adjusting-screws, while such springs are by our improvements held inplace within al recess foimed in the interior of the adj listing-screwsD and K.

Owing to the limited space for the springs E andJ" between theV springsupporting shouf'- der C and the bearing-surface of the cordholding armF and the lever G it has heretofore been common to employ flat platesprings instead of spiral springs, it being difficult to insert a spiralspring of' sufficient length in the limited spaces allowed when suchsprings were placed against the end of the adjustingscrews, While it isobvious that by using recessed adjusting-screws G and K the length ofthe spiral springs may be greatly increased, so as to extend within thescrews through the screw-supporting shoulder C', to or near their outerends, and we are enabled to insert a much longer spiral spring than wecould otherwise, which will producethe required movements, while it isobvious that when supporting the springs upon the outside of or againstthe ends of the screws the length of the spring is limited by the spacebetween the end of the screw and its opposing bearings.

Having thus described our improvements, Vwhat we claim as new, anddesire to secure by Letters Patent, isl

l. In twine binders for harvesters, the combination of the shaft R,collar N, provided with lug M, slide E, provided with ellipticallyshapedrecess L and angular recesses O and l), said slide being adapted to bemoved upward and downward by the circular movement of said lug M withinsaid recess, leverD, centrally pivoted to the supporting-frame T, pawlB, and ratchet-wheel. C, affixed to the side of the cord-holding disk A,substantially as and for the purpose set forth.

2. In a cord-knotter for grain-binders, the combination of the shaft R,collar N, provided with lug M, slide E,having recesses L, O, and P, saidslide E being guided in its reciprocating movement by the bolt 71,operating in slot g and connecting at its lower end by a movablejointwith the pawl-lever D,lever'D, formed in two parts adj ustabl y securedtogether and pivoted to the frameT upon theshaft or trunnion d', pawl B,and ratchet-wheel O, said wheel C being affixed to the side of thecordholding disk A, substantially as shown and described.

In testimony Whereofwe afiix oursignatures in presence of two witnesses.

CONRAD FARNER. GEORGE LINDER. Witnesses:

JAS. B. ERWIN, E. R. INMAN.

